Things that make you realize that you're a bit of a slut: when you count the number of non-overlapping threesomes you've been in, and it's more than the number of individual people your gf has been with EVER. And your gf currently has three partners.
Me, 30ish bi female, been doing solo poly for roughly 5 years. Gia, Clay, and Pike, my partners. Davis, ex/friend/"it's complicated." Eric, Gia's husband. Bee, Gia and Eric's toddler.